| Balu | |
|---|---|
| Location | |
| Country | Romania |
| Counties | Vâlcea County |
| Physical characteristics | |
| Mouth | Lotru |
• location | Vidra Lake |
• coordinates | 45°25′57″N 23°41′51″E / 45.4324°N 23.6976°E |
| Length | 9 km (5.6 mi) |
Basin size | 14 km2 (5.4 sq mi) |
| Basin features | |
| Progression | Lotru→ Olt→ Danube→ Black Sea |
The Balu is a left tributary of the river Lotru in Romania. It discharges into Vidra Lake, which is drained by the Lotru. Its length is 9 km (5.6 mi) and its basin size 14 km2 (5.4 sq mi).